JPS636256Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a collection swivel device attached to a plurality of parallel drilling devices of an earth auger or other foundation pile building machine.

Foundation piles where cement milk, mortar, etc. are supplied into the soil that has been drilled by an earth auger, or water is mixed with the earth and sand discharged from the borehole to discharge the drilled soil, and concrete is poured after the borehole is drilled. In the construction method, to supply water, compressed air, etc. used for pile construction materials or during drilling,
Attaching swivels to drilling machines has already been implemented. In this case, a drilling machine with multiple drilling devices installed side by side requires the same number of swivels, material feeding pumps, and other devices as the drilling devices, resulting in multiple structures, troublesome operation, and high costs. There is.

This invention aims to eliminate the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In Figure 1, five hollow screws 1 are supported on an excavation platform 3 on which supports 2 are suspended so as to be able to rise and fall freely.
A hollow screw 1 is connected to five swivels 5 supported by a swivel support 4 which is suspended above the swivel so as to be able to rise and fall freely.

A sealed feeding tube 7 common to each swivel is provided on the side of the swivel 5, and the feeding tube 7 and each swivel 5 are connected via a union joint 8 or the like to a distribution tube 9.
At the same time, a supply pipe 10 for pressure-feeding materials from the ground via a pump (not shown) is connected to the feed pipe 7.

In addition to the above-mentioned supply pipe 10, the feeding tube 7 is provided with a sub-supply pipe 11 if necessary.

As shown in FIG. 3, the feeding tube 7 is divided into two parts along the center line of the tube, one of which is connected to the other by a hinge structure 12 so as to be openable and closable, and the other is fixed with a fixing member 13 such as a bolt, so that the inside of the tube is provides resistance to the material traveling straight from the supply pipe 10 to the distribution pipe 9 at the shortest distance,
Equalizing plate 1 for evenly supplying materials to each distribution pipe 9
4, and both ends of the cylinder are sealed with removable caps 15.

With the structure described above, pile building materials such as cement milk and mortar and compressed air are fed into the feed tube 7 while drilling with the hollow screw 1, and each distribution tube 9
From the swivel 5, the hollow connecting pipe 6, and the hollow screw 1, it is supplied from the tip into the hole drilled by the screw, and is used not only for building piles, but also for press-fitting cement milk alone, and for draining earth and sand from the drilled area. water,
or used for air supply or other purposes;
In addition to the supply pipe 10, the sub-supply pipe 11 can also be used for materials, water, air, etc.

As described above, according to this invention, materials for drilling and pile construction are evenly sent to each swivel 5 from the common feeding cylinder 7 of each swivel 5 by the pressure equalizing plate 14 provided in the cylinder. A single pump and feed tube is sufficient for supplying the water to each swivel.
The configuration and handling become simple and easy, and the price of the entire device becomes low. Further, since the feeding cylinder 7 is provided with a pressure equalizing plate 14 inside, the material to be supplied is evenly supplied to each swivel 5, and the inside can be easily cleaned by simply removing the caps 15 at both ends. By removing the cylinder and releasing the tube, you can easily and completely inspect and clean the inside.

FIGS. 4 and 5 show another embodiment, in which instead of the feeding tube 7 common to each swivel provided on the side of the plurality of swivels 5 in the previous embodiment, A feeding box 16 common to each swivel
A pressure equalizing plate 1 is installed along the longitudinal direction inside the same box.
7 is fixed to the bottom of the feeding box 16, and the pressure equalizing plate 1 is fixed to the bottom of the feeding box 16.
A gap a is formed between the upper end of the feeding box 16 and a cover plate 19 which is detachably fixed to the feeding box 16 with an appropriate fixture 18, thereby creating a chamber that communicates with the inside of the feeding box 16 upward along the longitudinal direction. The bottom of one chamber b and each swivel 5 are connected with a distribution pipe 20, and the other chamber c is divided into chambers b and c.
A material supply pipe 10 is connected to the upper cover plate of the feed box 16, and cement milk and other materials for pile construction are supplied from above into the chamber c of the feeding box 16 from the supply pipe 10. Filled and equalized plate 1
7 and enters the chamber b and is supplied to each swivel 5, so that construction materials can be evenly distributed.

[Brief explanation of the drawing]

The attached drawings show an embodiment of this invention.
The figure is a front view of the earth auger, Figure 2 is a plan view showing the main parts of this invention, Figure 3 is a partially cutaway side view of Figure 2, and Figure 4 is a partially cutaway side view of another embodiment. , FIG. 5 is a longitudinal sectional front view of the main part of FIG. 4. 2... Prop, 5... Swivel, 7... Feeding tube,
9... Distribution pipe, 10... Supply pipe, 13... Fixture.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A common feeding tube that goes up and down together with the swivels is provided on the side of a plurality of swivels installed in parallel that are suspended from a support so that they can be raised and lowered, and the multiple swivels and the feeding tube are A collection swivel characterized in that the supply tube is connected to the supply tube by a distribution pipe, and the supply pipe for supplying materials from the ground by a pump is connected to the supply tube. (2) The scope of the utility model registration claim, in which a common feeding cylinder for each swivel, which is connected to a plurality of swivels through a distribution pipe, is divided into parts along the center of the cylinder, and connected and fixed so as to be openable and closable using an appropriate fixture. The collective swivel described in item 1.